| // weak_undef_test_2.cc -- test handling of weak undefined symbols for gold |
| |
| // Copyright (C) 2014-2019 Free Software Foundation, Inc. |
| // Written by Cary Coutant <ccoutant@google.com>. |
| |
| // This file is part of gold. |
| |
| // This program is free software; you can redistribute it and/or modify |
| // it under the terms of the GNU General Public License as published by |
| // the Free Software Foundation; either version 3 of the License, or |
| // (at your option) any later version. |
| |
| // This program is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License |
| // along with this program; if not, write to the Free Software |
| // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| // MA 02110-1301, USA. |
| |
| // This file tests that we correctly deal with weak undefined symbols |
| // when searching archive libraries. If we have a weak undefined symbol, |
| // it should not cause us to link an archive library member that defines |
| // that symbol. However, if the symbol is also listed in a -u option on |
| // the command line, it should cause the archive member to be linked. |
| |
| |
| #include <cstdio> |
| |
| // This symbol is defined in weak_undef_file3.cc, but we should |
| // not load it from the library. |
| extern int weak_undef_1 __attribute__ ((weak)); |
| |
| // This symbol is defined in weak_undef_file4.cc, but is also |
| // listed in a -u option on the link command, so we should |
| // load it from the library. |
| extern int weak_undef_2 __attribute__ ((weak)); |
| |
| int *p1 = &weak_undef_1; |
| |
| int *p2 = &weak_undef_2; |
| |
| int |
| main() |
| { |
| int status = 0; |
| |
| if (&weak_undef_1 != NULL) |
| { |
| fprintf(stderr, "FAILED weak undef test 1: %s\n", |
| "&weak_undef_1 is not NULL"); |
| status = 1; |
| } |
| |
| if (&weak_undef_2 == NULL) |
| { |
| fprintf(stderr, "FAILED weak undef test 2: %s\n", |
| "&weak_undef_2 is NULL"); |
| status = 1; |
| } |
| |
| if (p1 != NULL) |
| { |
| fprintf(stderr, "FAILED weak undef test 3: %s\n", |
| "p1 is not NULL"); |
| status = 1; |
| } |
| |
| if (p2 == NULL) |
| { |
| fprintf(stderr, "FAILED weak undef test 4: %s\n", |
| "p2 is NULL"); |
| status = 1; |
| } |
| |
| return status; |
| } |